#include<stdio.h>
int main()
{
	float  D;
	scanf("%f",&D);
	if(D/3.0+50 == D/1.2)
	   printf("All");
	if(D/3.0+50 < D/1.2)
	   printf("Bike");
	if(D/3+50 > D/1.2)
	   printf("Walk");
	return 0;
}
